All our dedicated servers have a reset interface, which makes it possible to reset the server without any costs 24/7.
Login to the central customer management (https://customer-interface.com) and navigate to the menu item "Root-Server Functions". To perform a reset, use the "Restart Server" button of the desired server.
After you answered the request with "Yes", the reboot will be performed.
Please notice that the server will be offline for 15-30 minutes after a successful reboot, if your server performs an filesystem or quotacheck. Depending on size and configuration of the drive this can take a while.